From 48f79d0e5ccefcfe47a37f2d0470d41c4e0b95d6 Mon Sep 17 00:00:00 2001
From: Nick Hibma <n_hibma@FreeBSD.org>
Date: Mon, 15 Feb 1999 20:43:17 +0000
Subject: [PATCH] Added more verbose debugging output to uhci_run

---
 sys/dev/usb/uhci.c | 28 ++++++++++++++++++++++++++--
 1 file changed, 26 insertions(+), 2 deletions(-)

diff --git a/sys/dev/usb/uhci.c b/sys/dev/usb/uhci.c
index 2041089931c1..319e510bf812 100644
--- a/sys/dev/usb/uhci.c
+++ b/sys/dev/usb/uhci.c
@@ -324,8 +324,19 @@ uhci_init(sc)
 	UWRITE2(sc, UHCI_FRNUM, 0);		/* set frame number to 0 */
 	UWRITE4(sc, UHCI_FLBASEADDR, DMAADDR(&dma)); /* set frame list */
 
+#ifdef USB_DEBUG
+	/* PR1 */
+	if ( UREAD4(sc, UHCI_FLBASEADDR) != DMAADDR(&dma) )
+		printf("PR1:before busreset: FLBASEADDR = 0x%08x != DMADDR(&dma) = 0x%08x\n",
+			UREAD4(sc, UHCI_FLBASEADDR), DMAADDR(&dma));
+#endif
 	uhci_busreset(sc);
-
+#ifdef USB_DEBUG
+	/* PR1 */
+	if ( UREAD4(sc, UHCI_FLBASEADDR) != DMAADDR(&dma) )
+		printf("PR1:after busreset: FLBASEADDR = 0x%08x != DMADDR(&dma) = 0x%08x\n",
+			UREAD4(sc, UHCI_FLBASEADDR), DMAADDR(&dma));
+#endif
 	/* Allocate the dummy QH where bulk traffic will be queued. */
 	bsqh = uhci_alloc_sqh(sc);
 	if (!bsqh)
@@ -391,7 +402,7 @@ static void
 uhci_dumpregs(sc)
 	uhci_softc_t *sc;
 {
-	printf("%s; regs: cmd=%04x, sts=%04x, intr=%04x, frnum=%04x, "
+	printf("%s: regs: cmd=%04x, sts=%04x, intr=%04x, frnum=%04x, "
 	       "flbase=%08x, sof=%02x, portsc1=%04x, portsc2=%04x, "
 	       "legsup=%04x\n",
 	       USBDEVNAME(sc->sc_bus.bdev),
@@ -937,11 +948,19 @@ uhci_run(sc, run)
 	int run;
 {
 	int s, n, running;
+#ifdef USB_DEBUG
+	printf("PR1:uhci_run:start: ");
+	uhci_dumpregs(sc);
+#endif
 
 	s = splusb();
 	running = ((UREAD2(sc, UHCI_STS) & UHCI_STS_HCH) == 0);
 	if (run == running) {
 		splx(s);
+#ifdef USB_DEBUG
+		printf("PR1:uhci_run:do_nothing: ");
+		uhci_dumpregs(sc);
+#endif
 		return (USBD_NORMAL_COMPLETION);
 	}
 	UWRITE2(sc, UHCI_CMD, run ? UHCI_CMD_RS : 0);
@@ -950,6 +969,10 @@ uhci_run(sc, run)
 		/* return when we've entered the state we want */
 		if (run == running) {
 			splx(s);
+#ifdef USB_DEBUG
+			printf("PR1:uhci_run:succeed(%d): ", n);
+			uhci_dumpregs(sc);
+#endif
 			return (USBD_NORMAL_COMPLETION);
 		}
 		usb_delay_ms(&sc->sc_bus, 1);
@@ -958,6 +981,7 @@ uhci_run(sc, run)
 	printf("%s: cannot %s\n", USBDEVNAME(sc->sc_bus.bdev),
 	       run ? "start" : "stop");
 #ifdef USB_DEBUG
+	printf("PR1:uhci_run:fail: ");
 	uhci_dumpregs(sc);
 #endif
 	return (USBD_IOERROR);